• AD654 Fout's state on 0Hz output.

    Hi, guys. Thank you for your support.

    According to Figure 1 and Figure 2 of the AD654 data sheet,  Fout = 0 Hz when VIN = 0 V. 

    Please let me know that BJT of Fout is ON or OFF at this time?

    Best regard.

    Yuki.

  • About AD654

    Can AD654 used an capacitor to frequency converter? that is to fix Vin, instead, to change capacitance( several pF ), is it feasible?

  • AD654 long-term stability data

    Q 

    Is there any information about long term stability of AD654 available?

     

    A 

    Unfortunately we do not have any data on the long term stability of this part.

  • AD654 erroneous pulse output

    Hi All,

     

    One of my customer has trouble with AD654 V/F Converter in his renewal design.

    The current design circuit is shown in attached document.

    As shown in the attached sheet, the output terminal of AD654 (FOUT) is connected to photo-coupler input…

    • AD654ShematicandScopeshot.docx

  • Are there any examples of the AD654 used as a F/V converter?

    In the data sheet the AD654 states that it can be used for F/V conversion but I did not see this configuration in the data sheet or find it obvious, how would I connect the AD654 for this application?

  • RE: Request for reference circuit of AD674B/AD774B

    Hi,

       Sorry but we do not have a reference circuit for the AD654. But we can share articles like application notes and technical article about the V-to-F conversion. Do you have a particular application you want to use the AD654?

    http://www.analog.com…

  • RE: AD 654 V to F low frequency

    Hi,

       The frequency output are affected by R1 , R2 and Ct. The accuracy of this components can help determine the accuracy of the frequency output including also the errors contribute by the AD654. As mentioned in the datasheet, there is non linearity…

  • RE: Network Analyzer in Scopy is inaccurate

    Hello Arthur:

    First off just, so you are aware, I'm not one of the Scopy programmers, I wrote the software for the ADALM1000 (ALICE). But I have used / tested M2K / Scopy since development started.

    You make a number of valid points. Here are a few…

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